12806157 has 32 divisors (see below), whose sum is σ = 21387520. Its totient is φ = 6635520.

The previous prime is 12806141. The next prime is 12806161. The reversal of 12806157 is 75160821.

It is not a de Polignac number, because 12806157 - 2⁴ = 12806141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12806257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16269 + ... + 17037.

It is an arithmetic number, because the mean of its divisors is an integer number (668360).

Almost surely, 2^12806157 is an apocalyptic number.

It is an amenable number.

12806157 is a deficient number, since it is larger than the sum of its proper divisors (8581363).

12806157 is a wasteful number, since it uses less digits than its factorization.

12806157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 12806157 is about 3578.5691274586. The cubic root of 12806157 is about 233.9589196641.

Adding to 12806157 its reverse (75160821), we get a palindrome (87966978).

The spelling of 12806157 in words is "twelve million, eight hundred six thousand, one hundred fifty-seven".